Frictional Heat Treatment of Healthcare Waste

Frictional Heat Treatment (FHT) Technology

Thermal based, Non-incineration Treatment for Healthcare Waste

Frictional Heat Treatment (FHT) is a thermal, non-incineration treatment technology used for processing potentially infectious Health Care Waste. The process is based on heat generated by impact and friction of the waste. Residue from the process is sterilised, finely ground, moisture free and reduced in weight and volume.

The Newster® FHT technology is tested, patented and certified. It is the most valid alternative currently available to traditional incineration disposal methods used for healthcare waste.

Easy to use, inexpensive and suitable for hospital needs

The Newster® equipment is tailored to the needs of the healthcare facility and can be installed on site in a small size room. It can be equipped with weighing and bin cleaning systems. Electrical connections, water supply, and sewage collection are required.

The technology is easy to use. An operator with basic skills and a two to four day training course provided by 180 Waste Group can easily operate the unit. Training for service and maintenance staff is also provided, reducing the machine’s downtime.

The running costs, inclusive of energy consumption, maintenance, operating staff and consumables, allow a significant reduction of waste disposal costs.

Benefits of Onsite Frictional Heat Treatment of Healthcare Waste

The residual waste byproduct from our onsite treatment of healthcare waste is unrecognisable, sterilised and noticeably reduced in weight and volume. Economic benefits include significantly reduced waste processing, transportation and disposal costs. While environmental benefits are:


  • reduced carbon emissions
  • waste hazard and risk control
  • pollution and odour reduction; and
  • sanitation and hygiene improvements.

FHT Processing Cycle

Once the clinical waste is loaded and the sterilisation chamber closed, the highly automated Newster equipment begins a five stage waste treatment processing cycle.

Once the clinical waste is loaded and the sterilisation chamber closed the highly automated Newster equipment begins a five stage waste treatment processing cycle.

1st Stage - Loading and grinding

At the press of a button, the chamber lid is locked and stainless steel blades commence grinding the waste. As the rotor increases in speed the waste is agitated and control sprayed with water as the temperature increases. As the speed increases the waste is further processed.

2nd Stage - Evaporation of liquids

The composition of the waste will determine the duration of the initial processing as the temperature rises and the chamber thermostatically controlled. The phase continues until the generated humidity evaporates. Vapours released during evaporation are treated by absolute and charcoal filters.

3rd Stage - Sterilsation

The processing continues with the chamber increasing in temperature and the waste processed via thermal decomposition in order to achieve a sterilised state.

4th Stage - Cooling

Water is then sprayed into the chamber to assist cooling the dehydrated homogeneous waste. Water and condensable gases are discharged to sewer.

5th Stage - Unloading and disposal

As the final phase concludes the sterilised granular byproduct can be removed from the chute into the integrated waste collector ready for disposal. Throughout the treatment cycle the key processing metrics are recorded and printed for analysis.
The Five Stages of

The Frictional Heat Treatment Cycle

1st Stage - Loading and grinding

Loading and Grinding of Healthcare Waste

  • 1A. Wastes are loaded into the sterilisation vessel, the lid is closed and the treatment process is started by pressing a button. The engine starts in the first speed, filters start and resistances are turned on. Stainless steel blades commence grinding the waste
  • 1B. At 60°C the general water electrical valve opens and water starts to flow in the cooling columns. The rotor turns slowly at first, starting to pulverize the materials, and at the same time the temperature starts to rise. As the rotor increases in speed, the waste is agitated and control sprayed with water as the temperature increases.
  • 1C. The rotor turns faster (change from the first speed to the second), the temperature starts to rise rapidly and the materials are finely pulverized. As the speed increases the waste is further processed.
2nd Stage - Evaporation of liquids

Evaporation of Liquids

The composition of the waste will determine the duration of the initial processing as the temperature rises and the chamber thermostatically controlled.

The phase continues until the generated humidity evaporates. When 96–100°C are reached, temperature remains stable until the water present in the wastes has completely evaporated.

Vapours released during evaporation are treated by charcoal and absolute filters.

3rd Stage - Sterilsation

Sterilisation of Healthcare Waste

The processing continues with the chamber increasing in temperature. After the water has evaporated the temperature starts to rise rapidly again, reaching 150°C.

After the peak the rotor turns slowly (first speed) and resistances turn off. The waste is processed via thermal decomposition in order to achieve a sterilised state.

4th Stage - Cooling

Cooling

Water is then sprayed into the chamber to assist cooling the dehydrated homogeneous waste down to 95°C.

Water and condensable gases are discharged to sewer.

5th Stage - Unloading and disposal

Unloading and Disposal of Healthcare Waste

As the final phase concludes the sterilised granular byproduct can be removed from the chute into the integrated waste collector ready for disposal. Key processing metrics for entire process are recorded and printed for analysis.